from datetime import datetime
from flask import Flask, render_template, session, redirect, url_for, flash
from flask_bootstrap import Bootstrap
from flask_moment import Moment
#FORM
from flask.ext.wtf import Form
from wtforms import SubmitField, StringField
from wtforms.validators import DataRequired

#db
import os
from flask.ext.sqlalchemy import SQLAlchemy

basedir = os.path.abspath(os.path.dirname(__file__))

app = Flask(__name__)
# app = Flask(__name__)

app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///' + \
                                        os.path.join(basedir,'data.sqlite')
app.config['SQLALCHEMY_COMMIT_ON_TEARDOWN'] = True
db = SQLAlchemy(app)

app.config['SECRET_KEY'] = 'liujw'
bootstrap = Bootstrap(app)
moment = Moment(app)

#dbMODELS

class NameForm(Form):
    name = StringField('what is you name!', validators=[DataRequired()])
    # age = StringField('enter you age',validators=[DataRequired()])
    submit = SubmitField('tijiao')


class Role(db.Model):
    __tablename__ = 'roles'
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), unique=True)
    users = db.relationship('User', backref='role', lazy='dynamic')

    def __repr__(self):
        return "<Role %r>" % self.name

    class User(db.Model):
        __tablename__ = 'users'
        id = db.Column(db.Integer, primary_key=True)
        username = db.Column(db.String(64), unique=True, index = True)
        role_id = db.Column(db.Integer, db.ForeignKey('roles.id'))


@app.errorhandler(404)
def page_not_found(e):
    return render_template('404-db.html', current_time = datetime.utcnow()), 404


@app.errorhandler(500)
def internal_server_error(e):
    return render_template('500-db.html', current_time = datetime.utcnow()), 500


@app.route('/')
def index():
    return render_template('index-db.html',
                           current_time=datetime.utcnow())


@app.route('/', methods=['GET', 'POST'])
def index():
    form = NameForm()
    if form.validate_on_submit():
        user = User.query.filter_by(username=form.name.data).first()
        if user is None:
            user = User(username = form.name.data)
            db.session.add(user)
            session['known'] = False
        else:
            session['known'] = True
        session['name'] = form.name.data
        form.name.data = ''
        return redirect(url_for('index'))
    return render_template('index-db.html',
                           form = form,
                           name = session.get('name'),
                           known = session.get('known', False),
                           current_time=datetime.utcnow())

@app.route('/form', methods=['GET', 'POST'])
def fform():
    #name = None
    form = NameForm()
    if form.validate_on_submit():
        session['name'] = form.name.data
        return redirect(url_for('fform'))
    #   name = form.name.data
    #   form.name.data = ""
    return render_template('fform-db.html', form=form,
                           name=session.get('name'),
                           current_time = datetime.utcnow()
                           )

@app.route('/flash', methods=['GET', 'POST'])
def flash1():
    form = NameForm()
    if form.validate_on_submit():
        old_name = session.get('name')
        if old_name is not None and old_name != form.name.data:
            flash('OPS!you have change you name')
        session['name'] = form.name.data
        return redirect(url_for('flash1'))
    return render_template('fform-db.html', form=form,
                           name=session.get('name'),
                           current_time = datetime.utcnow()
                           )



@app.route('/user/<name>')
def user(name):
    return render_template('user-db.html',
                           current_time=datetime.utcnow(), name=name)


if __name__ == "__main__":
    app.run(debug=True)













if __name__ =="__main__":
    app.run()
